Manufacture of coal or other briquettes



Jan. 8, 1924. 1,479,822

l H. G. FLoYD MANUFACTURE OF COAL OR OTHER BRIQUETTES Filed sept; 28. 1922 4 sheets-sheet 1 "will Magg m E y :C V-gw'l' if 'mm H" Jan. 8, 1924. 1,479,822

H. G. FLOYD MANUFACTURE OF COAL OR OTHER RIQUETTES Filed Sept. 28. 1922 4 Sheets-Sheet 2 Jan. 8 1924.

H. G. FLOYD MANUFACTURE 0F CUAL 0R OTHER BRIQUETTES Filed Sept. 28. 1922 4 Sheets-Sheet 3 INVENTOR Jan. 8, 1924. 1,479,822 H. lG. FLOYD MANUFACTURE OF COAL OR OTHER BRIQUETTES INVIITR Filed Sept. 28.. 1922 4 Sheets-Sheet 4 Patented Jan. 8, 1924.

UNITE STATES 1,479,822 PATENT OFFICE.

HENRY GARDINER LLOYD, OF SURBITON, ENGLAND, ASSIGNOR F ONE-HALF T0 GEORGE ST. BARBE, 0F LONDON, ENGLAND.

MANUFACTURE OF COAL 0R OTHER BRIQUETTES.

Application filed September 28, 1922. Serial No. 591,116.

To all w-wm z't mw] concern Be it known that I, HENRY GARDINER LLOYD, a subject of the Kin of England, residing at Surbiton, Surrey, ngland, have invented certain new and useful Improvements in the Manufacture of Coal or Other Briquettes, of which the following is a specification.

This invention is for improvements in or relating to the manufacture of coal or other briquettes. In the United States Patent specification Serial No. 474,202 there is described a method of .manufacturing such briqluettes .in which economy in the use of bin ing agent is effected by bringing the binding agent to a froth before it is mixed with the material to be briquetted. The present invention is also concerned with this method of manufacturing .briquettes and one of the objects of the invention is to enable the manufacture to be carried out in a continuous manner.

According to the primary feature of the present invention there is' provided an apparatus for manufacturing coal or other briquettes with the aid of a binding agent, which comprises means for simultaneously feeding continuous streams of heated binding agent (such as bitumen, pitch or the like) and water (or wet steam) to a receptacle in which they intermingle and froth, and means for continuously delivering said froth from the receptacle into contact with a stream of the material to be briquetted. Conveniently the froth is delivered into a falling shower of the material to be briquetted, or vice`-versa.

According to another feature of the invention means are provided whereby the stream of intermingled froth and material to be briquetted is continuously removed, and whereby during such removal further quantities of the material to be briquetted are incorporated in the said stream.

For a more complete understanding of the invention there will now be described, by way of example only and with reference to the accompanying drawings, certain constructional forms of apparatus according to the invention. Itlis to be understood, however, that the invention is not limited to the precise constructional details illusstrated.

In these drawings Figure 1 is a side view, partly in section, of one form of apparatus according to the invention;

Figure 2 is a plan thereof also partly in section;A

Figure 3 is a section on the line 3--3 of Figure 1;

Figure 4 is a sectional view of a portion of a modified construction,

Figure 5 is a similar view of another construction, and

Figure 6 is a view of a modified arrangement of blades for the mixing tank.

Llke reference numerals indicate like parts throughout the drawings.

There is illustrated at 10 in Figure 1 a receptacle for the binding agent, the receptacle `being provided with a heating coil 11. The receptacle 10 delivers through a valve 12 and conduit 13 into a tank 14. This tank is provided with a heating coil 15 and with pipes 16 for the delivery of aqueous fluid in the form of water or wet steam, these pipes 16 being perforated along their undersides at 17 to constitute nozzles. It is intended that the binding agent shall be admitted to the tank 14 up to a level somewhat above that of the conduit 13. The pipes 16 will thus be immersed in the binding agent. As described in the aforesaid patent specification Serial No. 474,202 the treatment of the binding agent with water or wet steam produces a froth in the tank 14, and the aperture of the conduit 13 is provided with a baile plate 18 for the purpose of preventing the froth from passing back through the conduit 13. The froth rises in the tank 14 and passes through the neck 19 into the channel 20. This channel is formed in a receptacle 21 having an oblique surface 22 down which there is continuously delivered a stream of the material to be bri uetted. The rate of flow of the latter can e adjusted by means of the sliding door 23. The stream of froth and material to be briquetted pass down the channel 20 and thus become intermingled. To facilitate their mixing the extended oblique surface indicated in chain lines at 24 may be provided. Underneath the lower end of the channel 20 is a mixing tank 25 which has a steam heated hollow bottom 26. Passing through the tank' 25 'is a square shaft 27 on which are .mounted beater arms 28 to agitate and intermix the froth and the material to be briquetted.

Conveniently, there are four arms each unit upon the shaft 27 and one arm 1n each that the widened ends 29 are consecutively spa'ced through 90 in the direction of ro-k tation so that a screw formation is created for feeding the mixture from left to right as seen in Figure 1. lf desired, at intervals along the length of the tank 25 fresh supplies of the material to be briquetted may be incorporated in the mixture. The feeding trough indicated in chain lines at 30 may be used for this purpose. The preferred final composition of the briquettes is indicated in the aforesaid specication Serial No. ll'f'll,202. When the material reaches the right hand end of the tank 25 as seen in Figure 1, the material falls into a pit or onto a conveyor and is subsequently pressed to shape in a suitable machine. llf desired, several mixing tanks may be arranged to deliver their contents to a single conveyor which transports the material to a press.

Suitable valve means, similar, for example, to the door 23, maybe htted in the neck 19 to control the delivery of the froth if desired, and furthermore feeding means for facilitatin travel of the froth may be employed i desired.

llnstead of the arrangement illustrated in Figures l, 2 and 3, the Streams of frothing binding agent and material to be briquetted could arrive on the opposite sides of a dividing plate 3l, Figurel, and pass down the latter past the edge of the plate to intermingle in the tank 25. This guide plate 3l will ensure that the froth and other material will remain at and towards the middle of the channel 20 during their passage downward.

A further arrangement is shown' in Figure 5 in which the froth delivered through the neck 19 into the channel 20 falls on to the stream of material to he briquetted which is delivered by the chute 2-2 situated towards the foot of the channel 20.

A modified arrangement of blades for the vmixing tank is shown in Figure 6 which in some circumstances and with some materials may be found to be more suitable than the arrangement herelnbefore described. lin

Figure 6 the blades 32 are mounted upon a.

squared shaft 33 and are each set at an angle and provided with a thin leading edge to .facilitate the travel of the material along the mixing tank.

-By the employment of the apparatus according to the present invention the manufacture of briquettes may be carried ,on continuously and economically. The

invention is applicable to the manufacture of brlquettes of coal, charcoal or stone,

numana iavel, sand, grit and wood, and is not ited to the precise constructional details hereinbefore set forth.

l. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent, which comprises means for feeding continuous streams of heated binding agent and water to a receptacle in which they froth, means for delivering a stream of material to be briquetted, and means for con tinuously delivering said froth from the receptacle into contact with said stream of material.

2. Apparatus for manufacturing coal or other hriquettes with the aid of a binding agent, which comprises means for simultaneously feedin continuous streams of heated bitumen an wet steam to a receptacle in which they 'intermingle and froth, means for delivering a stream of material to be briquetted, and means for continuously delivering said froth from the receptacle into contact with said stream of material..

3. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent, which comprises means for simultaneousl feeding continuous streams of heated hindying agent and water to a receptacle in which they intermingle and froth, `and means for continuously delivering said froth into a falling shower of the material to he briquetted.

4l. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent, which comprises means for simultaneously feeding continuous streams of heated binding agent and water to a receptacle in which they intermingle and froth, means for continuously delivering said froth from the receptacle into contact with a stream of the material to be briquetted, and means for agitating the streams of froth and material to be briquetted during their intermixing.

5. Apparatus for manufacturing coal or -other briquettes with the aid of a binding agent, which comprises means for simultaneously feeding continuous streams of heated bindin agent and water to a receptacle in which t ey intermingle and froth, means for continuously .delivering said froth from the receptacle into contact with a stream of the material to be briquetted, means for continuously removing the stream of intermingled froth and material to be briquetted.

3.. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent, which comprises means for simultaneously feeding continuous streams of heated bindin agent and water toa receptacle in which t ey intermingle and froth, means for continuously delivering said froth from the receptacle into contact with a stream of the' 'material to be briquetted, and a con.- veyor screw for continuously removing the stream of intermingled froth and material to be briquetted.

7. Apparatus for manufacturing coal or other briquet'tes with the aid of a binding agent, whlch comprises means for simultaneously feeding continuous streams of heated binding agent and water to a receptacle in which they intermingle and froth, means for continuously delivering said froth from the receptacle into contact with a stream of the material to be briquetted, means for continuously removing the stream of intermingled froth and material to be briquetted and means for incorporating in the said stream, during lsuch removal further quantities of the material to be brlquetted.

8. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent comprising in combination a receptacle, conduits for delivering continuous streams of heated binding agent and anA aqueous fluid thereto, and a delivery conduit opening into the receptacle above the floor thereof to conduct away froth therefrom.

9. Apparatus `for manufacturing coal or other briquettes with the aid of a binding agen-t, comprising in combination a receptacle with a wide base and a relatively narrow out-turned neck situated at the to of the receptacle, heating means on the goor of lthe receptacle, a conduit having an outlet adjacent said floor, means for supplying a stream of heated binding agent through said conduit, perforated pipes extending through 'the receptacle near the floor thereof, means for supplying water to said pipes and means for conductin away froth from the aforesaid neck of t e receptacle.

10. Apparatus for manufacturing coal or other briquettes with the aid of'a binding agent, comprising in combination a receptacle with a wide base and a sloping cover leadin to a relatively narrow out-turned of the receptacle, a conduit adjacentv the oor of the receptacle for supplying a. stream of heated binding agent thereto, perforated pipes extending through the receptacle near the floor'thereof for supplying wet steam to the receptacle, means for conducting away froth from the aforesaid neck of the receptacle and means for causin a stream of material to be briquetted to lntermingle with said froth.

11. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent, comprising in combination a receptacle with a wide base and a froth outlet situated at the top of the receptacle, a conduit delivering heated binding agent and situated adjacent the floor of the receptacle, a baile plate (18) for preventing froth passing through said conduit, and means for supplying wet steam to said recep-tacle.

12. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent, comprising means for feeding a stream of a heated binding agent to a receptacle, means for injecting we t steam into the binding agent in the said receptacle and thereby producing a froth, means for delivering a stream of material to be briquetted, and means for continuously delivering said froth from the receptacle into contact with said stream of material.

13. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent, comprising means for feeding a stream of heated binding agent to a receptacle, means comprising a plurality of nozzles for feeding a plurality of jets of wet steam into the binding agent in the lower art of said receptacle and thereby produclng froth which intermingles with the binding agent, means for delivering a stream of the material to be briquetted, and means for delivering said froth from the receptacle into contact wi-th said stream of material.

14. Apparatus for manufacturing coal or other briquettes with the aid of a binding agent, which comprises means for feeding continuous streams of heated binding a ent and an aqueous Huid to a receptacle in w ich they froth, means for delivering a stream of material to be briquetted, and means for continuously delivering said froth from the receptacle into contact with said stream of material.

In testimony whereof I aflix my signature.

HENRY GARDINER LLOYD. 

